The system was set up to be impossible to appeal. There is no court appearance option; as the article explains these were not handled the same as if a police officer wrote you a ticket. The tickets from cameras are a civil matter so your option would be to sue. If you just refuse to pay it is considered an unpaid fee, then you cannot register the vehicle without paying and of course if you don’t get your vehicle registered it snowballs from there.
In the area I was familiar with that was doing this, the main complaint I heard was the fact that there was no way to dispute them, no way to defend yourself.
Small claims court. My guess is the ticketing town would not bother to show up.